Two-Digit Addition

Front

What is two-digit addition?

Back

Two-digit addition is the process of adding numbers that have two digits, such as 23 + 45.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 38 and 42?

Back

80

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 17 and 29?

Back

46

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 64 and 29?

Back

93

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 24 and 57?

Back

81

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 23 and 45?

Back

68

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What do we call the result of an addition?

Back

The result of an addition is called the sum.

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CCSS.6.EE.A.1

Front

What is the first step in adding two-digit numbers?

Back

The first step is to align the numbers by their place values (tens and ones).

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CCSS.2.NBT.B.6

Front

How do you add the tens place in two-digit addition?

Back

You add the digits in the tens place together.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

How do you add the ones place in two-digit addition?

Back

You add the digits in the ones place together.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5